stonefish vs scorpaenid fish

stonefish and scorpaenid fish both are nouns.

Word	Noun	Adjective	Verb	Adverb
stonefish	Yes	No	No	No
scorpaenid fish	Yes	No	No	No

As nouns, scorpaenid fish is a hypernym of stonefish; that is, scorpaenid fish is a word with a broader meaning than stonefish:

stonefish: venomous tropical marine fish resembling a piece of rock
scorpaenid fish: any of numerous carnivorous usually bottom-dwelling warm-water marine fishes found worldwide but most abundant in the Pacific

Other hypernyms of stonefish include scorpaenid.

stonefish (noun)	scorpaenid fish (noun)
venomous tropical marine fish resembling a piece of rock	any of numerous carnivorous usually bottom-dwelling warm-water marine fishes found worldwide but most abundant in the Pacific